U.S. patent application number 17/715079 was filed with the patent office on 2022-07-21 for box, battery pack, and device.
This patent application is currently assigned to Jiangsu Contemporary Amperex Technology Limited. The applicant listed for this patent is Jiangsu Contemporary Amperex Technology Limited. Invention is credited to Wumei Fang, Liwen JIANG, Jinmei Xu.
Application Number | 20220231371 17/715079 |
Document ID | / |
Family ID | 1000006307299 |
Filed Date | 2022-07-21 |
United States Patent
Application |
20220231371 |
Kind Code |
A1 |
JIANG; Liwen ; et
al. |
July 21, 2022 |
BOX, BATTERY PACK, AND DEVICE
Abstract
Embodiments of this application provide a box, a battery pack,
and a device, and relate to the technical field of energy storage
devices. The box includes a frame member, a fixing member, and a
shielding member. The frame member is configured to form an
accommodation cavity. The fixing member is configured to mount the
box. The fixing member is connected to the frame member. The
shielding member is configured to be connected to the frame member.
The shielding member includes a hollow portion. At least a part of
the fixing member is accommodated in the hollow portion. The
battery pack includes the box and a battery accommodated in the
accommodation cavity of the box. The device includes the battery
pack, and the battery pack is configured to provide electrical
energy.
Inventors: |
JIANG; Liwen; (Changzhou,
CN) ; Xu; Jinmei; (Changzhou, CN) ; Fang;
Wumei; (Changzhou, CN) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
Jiangsu Contemporary Amperex Technology Limited |
Changzhou |
|
CN |
|
|
Assignee: |
Jiangsu Contemporary Amperex
Technology Limited
Changzhou
CN
|
Family ID: |
1000006307299 |
Appl. No.: |
17/715079 |
Filed: |
April 7, 2022 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
|
|
PCT/CN2020/139626 |
Dec 25, 2020 |
|
|
|
17715079 |
|
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Current U.S.
Class: |
1/1 |
Current CPC
Class: |
H01M 50/209 20210101;
H01M 2220/20 20130101; H01M 50/249 20210101; H01M 50/242
20210101 |
International
Class: |
H01M 50/242 20060101
H01M050/242; H01M 50/249 20060101 H01M050/249; H01M 50/209 20060101
H01M050/209 |
Foreign Application Data
Date |
Code |
Application Number |
Mar 31, 2020 |
CN |
202010244822.X |
Claims
1. A box for a battery pack, comprising: a frame member, configured
to form an accommodation cavity; a fixing member, configured to
mount the box, wherein the fixing member is connected to the frame
member; and a shielding member, configured to be connected to the
frame member, wherein the shielding member comprises a hollow
portion, and at least a part of the fixing member is accommodated
in the hollow portion; and the shielding member comprises a first
shielding member and a second shielding member, and the first
shielding member and the second shielding member are connected to
each other to form the hollow portion.
2. The box according to claim 1, wherein the fixing member is
connected to a periphery of the frame member.
3. The box according to claim 1, wherein the first shielding member
comprises a first bulge, the first bulge is disposed to protrude
away from the second shielding member, and the first bulge and a
corresponding part of the second shielding member form the hollow
portion.
4. The box according to claim 1, wherein the second shielding
member comprises a second bulge, and the second bulge is disposed
to protrude toward the first shielding member.
5. The box according to claim 4, wherein the second bulge fits
snugly with the first shielding member.
6. The box according to claim 1, wherein the fixing member
comprises a hitch portion configured to fix the box, and the hitch
portion is accommodated in the hollow portion.
7. The box according to claim 6, wherein a top of the hitch portion
fits snugly with the shielding member; and/or a bottom of the hitch
portion fits snugly with the shielding member.
8. The box according to claim 6, wherein the hitch portion
comprises a third bulge, the third bulge is disposed to protrude
toward the first shielding member, and a gap exists between the
third bulge and the first shielding member.
9. A battery pack, comprising: the box according to claim 1; and a
battery accommodated in an accommodation cavity of the box.
10. A device, comprising the battery pack according to claim 9,
wherein the battery pack is configured to provide electrical
energy.
Description
CROSS-REFERENCE TO RELATED APPLICATIONS
[0001] This application is a continuation of International
Application No. PCT/CN2020/139626, filed on Dec. 25, 2020, which
claims priority to Chinese Patent Application No. 202010244822.X,
filed on Mar. 31, 2020, both of which are hereby incorporated by
reference in their entireties.
TECHNICAL FIELD
[0002] This application relates to the technical field of
batteries, and in particular, to a box, a battery pack, and a
device.
BACKGROUND
[0003] The market demand for new energy vehicles has spurred
vigorous development of the new energy vehicles. High reliability
of design needs to be ensured in the structural design of a battery
pack. Generally, a hitch part of the battery pack is a boundary of
the battery pack. The hitch part safeguards performance and
integrity of the battery pack, and is essential to safety of a
vehicle. However, in the related art, the hitch part of the battery
pack is exposed to the outside of the battery pack. Therefore, when
the vehicle loses control or collides, the hitch part is most
vulnerable to failure. Consequently, the battery pack is squeezed,
and safety performance of the battery pack and the vehicle is
inferior.
SUMMARY
[0004] This application provides a box, a battery pack, and a
device to mitigate the problem that a hitch part of the battery
pack is vulnerable to failure when a vehicle collides.
[0005] A first aspect of the embodiments of this application
provides a box. The box includes:
[0006] a frame member, configured to form an accommodation
cavity;
[0007] a fixing member, configured to mount the box, where the
fixing member is connected to the frame member; and
[0008] a shielding member, configured to be connected to the frame
member, where the shielding member includes a hollow portion, and
at least a part of the fixing member is accommodated in the hollow
portion.
[0009] The shielding member includes a first shielding member and a
second shielding member. The first shielding member and the second
shielding member are connected to each other to form the hollow
portion.
[0010] Because the shielding member with a hollow portion is
disposed, even if a vehicle is squeezed in a lateral collision, the
shielding member is squeezed first, and the shielding member
withstands a squeezing force. In addition, the hollow portion
disposed in the shielding member serves functions of absorbing and
cushioning the squeezing force in the lateral collision, thereby
increasing the capability of resisting the squeezing force in the
lateral collision and effectively safeguarding the performance and
soundness of the battery pack. This mitigates the problem that a
hitch part of the battery pack is vulnerable to failure when a
vehicle collides, and improves safety performance of the battery
pack and the vehicle.
[0011] In addition, the first shielding member and the second
shielding member are disposed separately, so as to achieve the
advantage of high strength in comparison with the integrally formed
shielding member. The first shielding member and the second
shielding member are disposed independently, and a joint between
the first shielding member and the second shielding member can
withstand a relatively high extrusion force, thereby significantly
improving the capability of the shielding member to resist the
squeezing force in a lateral collision.
[0012] In some embodiments, the fixing member is connected to a
periphery of the frame member.
[0013] The fixing member is connected to the periphery of the frame
member. The shielding member is configured to be connected to the
frame member. The hollow portion contained in the shielding member
accommodates at least a part of the fixing member. In this way,
both the fixing member and the shielding member are connected to
the periphery of the frame member. Therefore, even if a vehicle is
squeezed in a lateral collision, the shielding member is squeezed
firstly, and the shielding member withstands a squeezing force. In
addition, the hollow portion disposed in the shielding member
serves functions of absorbing and cushioning the squeezing force in
the lateral collision, thereby increasing the capability of
resisting the squeezing force in the lateral collision and
effectively safeguarding the performance and soundness of the
battery pack.
[0014] In some embodiments, the first shielding member includes a
first bulge. The first bulge is disposed to protrude away from the
second shielding member. The first bulge and a corresponding part
of the second shielding member form the hollow portion.
[0015] In this embodiment, the first bulge is disposed to protrude
away from the second shielding member to facilitate formation of
the hollow portion configured to accommodate the fixing member. In
addition, the first bulge can increase strength of the first
shielding member, thereby increasing the strength of the entire
shielding member, improving the capability of resisting a squeezing
force in a lateral collision, and effectively safeguarding the
performance and soundness of the battery pack.
[0016] In some embodiments, the second shielding member includes a
second bulge, and the second bulge is disposed to protrude toward
the first shielding member.
[0017] In this embodiment, the provision of the second bulge can
increase the strength of the second shielding member, thereby
increasing the strength of the entire shielding member. In
addition, the second bulge is disposed to protrude toward the first
shielding member, thereby downsizing the entire shielding member
and downsizing the entire battery pack.
[0018] In some embodiments, the second bulge fits snugly with the
first shielding member.
[0019] In this embodiment, the second bulge fits snugly with the
first shielding member, thereby increasing the strength of the
close-fitting position. After being squeezed in a lateral
collision, the shielding member at the close-fitting position is
not likely to deform, thereby improving the capability of resisting
a squeezing force in a lateral collision and safeguarding the
safety performance of the battery pack.
[0020] In some embodiments, the fixing member includes a hitch
portion configured to fix the box, and the hitch portion is
accommodated in the hollow portion.
[0021] The hitch portion in this embodiment is configured to hitch
the box onto the vehicle. The hitch portion is accommodated in the
hollow portion. When a squeeze in a lateral collision occurs, the
hollow portion can serve a cushioning function and avoid the hitch
portion to collide directly, thereby improving the capability of
the battery pack to resist the squeezing force in a lateral
collision.
[0022] In some embodiments, a top of the hitch portion fits snugly
with the shielding member; and/or a bottom of the hitch portion
fits snugly with the shielding member.
[0023] In this embodiment, the top or bottom of the hitch portion
fits snugly with the shielding member to serve a function of
supporting the hollow portion.
[0024] Alternatively, both the top and bottom of the hitch portion
fit snugly with the shielding member. The hitch portion is located
in the hollow portion. Therefore, the hitch portion and the
shielding member fit snugly together to serve a function of
supporting the hollow portion, and increase the strength of the
shielding member.
[0025] The hitch portion includes a third bulge. The third bulge is
disposed to protrude toward the first shielding member. A gap
exists between the third bulge and the first shielding member.
[0026] In this embodiment, the provision of the third bulge can
increase the strength of the hitch portion. A protrusion direction
of the third bulge is consistent with a protrusion direction of the
first bulge, thereby leaving the space for the shielding
member.
[0027] A gap exists between the third bulge and the first shielding
member. The gap is configured to install a bushing.
[0028] A second aspect of the embodiments of this application
provides a battery pack. The battery pack includes: the box; and a
battery accommodated in an accommodation cavity of the box.
[0029] The battery pack in this embodiment includes the box,
thereby effectively safeguarding the performance and soundness of
the battery pack, mitigating the problem that a hitch part of the
battery pack is vulnerable to failure when a vehicle collides, and
improving safety performance of the battery pack and the
vehicle.
[0030] A third aspect of the embodiments of this application
provides a device. The device includes the battery pack configured
to provide electrical energy.
[0031] The device in this embodiment adopts the battery pack
described above, thereby effectively safeguarding the performance
and soundness of the battery pack, mitigating the problem that the
hitch part of the battery pack is vulnerable to failure when the
vehicle collides, and improving the safety performance of the
battery pack and the vehicle.
BRIEF DESCRIPTION OF DRAWINGS
[0032] To describe the technical solutions in the embodiments of
this application more clearly, the following outlines the drawings
used in the embodiments of this application. Evidently, the
drawings outlined below are merely a part of embodiments of this
application. A person of ordinary skill in the art may derive other
drawings from the outlined drawings without making any creative
efforts.
[0033] FIG. 1 is a schematic structural diagram of a device
according to an embodiment of this application;
[0034] FIG. 2 is a schematic structural diagram of a battery pack
according to an embodiment of this application;
[0035] FIG. 3 is a schematic structural diagram of a box according
to an embodiment of this application;
[0036] FIG. 4 is a bottom view of a box according to an embodiment
of this application;
[0037] FIG. 5 is a sectional view of FIG. 4 sectioned along an A-A
line;
[0038] FIG. 6 is a schematic structural diagram of a frame member
of a box according to an embodiment of this application;
[0039] FIG. 7 is a local detailed view of a part of FIG. 6;
[0040] FIG. 8 is a top view of a first shielding member of a box
according to an embodiment of this application;
[0041] FIG. 9 is a bottom view of a second shielding member of a
box according to an embodiment of this application; and
[0042] FIG. 10 is a local detailed view of a part of FIG. 9.
[0043] The drawings are not drawn to scale.
REFERENCE NUMERALS
[0044] P--Battery pack; [0045] L--Battery module; [0046] M--Box;
[0047] 1--Frame member; [0048] 11--Accommodation cavity; [0049]
12--Reinforcing plate; [0050] 13--Crossbeam; [0051] 14--Vertical
beam; [0052] 2--Shielding member; [0053] 21--First shielding
member; [0054] 211--First bulge; [0055] 211a--First through hole;
[0056] 212--Fourth bulge; [0057] 213--First connecting piece;
[0058] 22--Second shielding member; [0059] 221--Beam body; [0060]
222--Second bulge; [0061] 222a--Main body; [0062] 222b--Extension
portion; [0063] 223--Second through hole; [0064] 224--Second
connecting piece; [0065] 23--Hollow portion; [0066] 3--Fixing
member; [0067] 31--Hitch portion; [0068] 311--Third bulge; and
[0069] 312--Third through hole.
DETAILED DESCRIPTION OF EMBODIMENTS
[0070] The following gives a more detailed description of
implementations of this application with reference to accompanying
drawings and embodiments. The detailed description of the following
embodiments and the accompanying drawings are intended to
exemplarily describe the principles of this application, but not to
limit the scope of this application. Therefore, this application is
not limited to the described embodiments.
[0071] In the description of this application, unless otherwise
specified, "a plurality of" means two or more; the terms such as
"upper", "lower", "left", "right", "inner", and "outer" indicating
a direction or a position relationship are merely intended for ease
or brevity of description of this application, but do not indicate
or imply that the device or component referred to must be located
in the specified direction or constructed or operated in the
specified direction. Therefore, such terms shall not be understood
as a limitation on this application. In addition, the terms
"first", "second", and "third" are merely intended for descriptive
purposes, but are not intended to indicate or imply relative
importance. "Perpendicular" is not exactly perpendicular, but
within an error tolerance range. "Parallel" is not exactly
parallel, but within an error tolerance range.
[0072] The directional terms appearing in the following description
indicate the directions shown in the drawings, but are not intended
to limit specific structures in this application. In the context of
this application, unless otherwise expressly specified, the terms
"mount", "concatenate", and "connect" are understood in a broad
sense. For example, a "connection" may be a fixed connection, a
detachable connection, or an integrated connection, and may be a
direct connection or an indirect connection implemented through an
intermediary. A person of ordinary skill in the art can understand
the specific meanings of the terms in this application according to
specific situations.
[0073] Below, in a specific embodiment, this application is
described further in detail with reference to specific embodiments
in connection with the accompanying drawings.
[0074] FIG. 1 is a schematic structural diagram of a device
according to an embodiment of this application; and FIG. 2 is a
schematic structural diagram of a battery pack P according to an
embodiment of this application. As shown in FIG. 1 and FIG. 2, an
embodiment of this application provides a device. The device may be
a mobile device such as a vehicle, an energy storage cabinet, a
ship, or a small aircraft. The device includes a power source, and
the power source is configured to provide a driving force for the
device. The driving force of the device may be sole electrical
energy, or may include electrical energy and other types of energy
(such as mechanical energy). The power source may be a battery
module L (or a battery pack P), or may be a combination of a
battery module L (or battery pack P) and an engine, or the like.
Therefore, all devices powered by a battery module L (or battery
pack P) fall within the protection scope of this application.
[0075] By taking a vehicle as an example, a vehicle according to an
embodiment of this application may be a new energy vehicle. The new
energy vehicle may be a battery electric vehicle, or may be a
hybrid electric vehicle, a range-extended electric vehicle, or the
like. The vehicle may include a battery pack P and a vehicle body.
The battery pack P is disposed in the vehicle body. A driving motor
is further disposed in the vehicle body, and the driving motor is
electrically connected to the battery pack P The battery pack P
provides electrical energy. The driving motor is connected to
wheels of the vehicle body through a transmission mechanism to
drive the vehicle to move. Specifically, the battery pack P may be
horizontally disposed at a bottom of the vehicle body.
[0076] As shown in FIG. 2, a battery pack P according to this
embodiment includes a box M and a battery module L disposed in the
box M. The battery module L includes a plurality of batteries. The
batteries may be rechargeable secondary batteries. The plurality of
batteries are located in an inner cavity of the box M and stacked
together in the inner cavity along a length direction, a width
direction or a height direction.
[0077] Each of the batteries includes an electrode assembly, a cap
assembly, and a housing. The housing may be hexahedral or other
shapes. A cavity is formed inside the housing to accommodate the
electrode assembly and an electrolytic solution. The electrode
assembly is formed by winding or stacking a positive electrode
plate, a negative electrode plate, and a separator. One end of the
housing opens so that the electrode assembly can be placed into the
cavity of the housing through the opening. A plurality of electrode
assemblies may be disposed in the cavity. The plurality of
electrode assemblies are stacked together. The housing may include
a metal material, such as aluminum or an aluminum alloy, or may
include an insulation material such as plastic.
[0078] In a possible design, the box M is a structure the top of
which opens, and includes an upper box cover. The size of the upper
box cover is equivalent to the size of the opening at the top of
the box M. The upper box cover may be fixed to the opening by a
fastener such as a bolt. In addition, in order to improve
airtightness of the box M, a sealing element may be disposed
between the upper box cover and the box M.
[0079] The box M may be made of aluminum, aluminum alloy or other
metal materials. The box M contains an accommodation cavity 11. The
accommodation cavity 11 can accommodate a plurality of batteries.
The plurality of batteries may form battery modules L. The battery
modules L may be arranged alongside along a length direction (X) of
the battery pack P in the box M, or may be arranged alongside along
a width direction (Y) of the battery pack P Each battery module L
is fixed to the box M.
[0080] In the related art, a hitch part of the battery pack P is a
boundary of the battery pack P, and is most vulnerable to failure
when a vehicle collides. The hitch part is exposed to the outside
of the battery pack P and is not protected due to lack of a
shielding structure. Therefore, when the vehicle loses control or
collides, the hitch part is most prone to deform by a collision. In
addition, the collision squeezes the box M and further squeezes the
battery module L, thereby causing danger and impairing safety
performance.
[0081] FIG. 3 is a schematic structural diagram of a box M
according to an embodiment of this application; FIG. 4 is a bottom
view of a box M according to an embodiment of this application; and
FIG. 5 is a sectional view of FIG. 4 sectioned along an A-A line.
As shown in FIG. 3 to FIG. 5, this embodiment provides a box M for
a battery pack P The box M includes a frame member 1, a fixing
member 3, and a shielding member 2. The frame member 1 is
configured to form an accommodation cavity 11. The fixing member 3
is configured to mount the box M. The fixing member 3 is connected
to the frame member 1. The shielding member 2 is configured to be
connected to the frame member 1. The shielding member 2 includes a
hollow portion 23. At least a part of the fixing member 3 is
accommodated in the hollow portion 23. The provision of the
shielding member 2 with a hollow portion 23 mitigates the problem
that a hitch part of the battery pack P is vulnerable to failure
when a vehicle collides, and improves safety performance of the
battery pack P and the vehicle.
[0082] The fixing member 3 is configured to hitch the frame member
1 onto the vehicle to form a hitch part of the battery pack P. When
the vehicle is squeezed in a lateral collision, the fixing member 3
is squeezed, and then the frame member 1 and the battery module L
are squeezed. Therefore, the shielding member 2 with a hollow
portion 23 is disposed. The hollow portion 23 of the shielding
member 2 accommodates at least a part of the fixing member 3 to
protect the fixing member 3. Therefore, when the vehicle is
squeezed in a lateral collision, the shielding member 2 is squeezed
first, and the shielding member 2 withstands a squeezing force. In
addition, the hollow portion 23 disposed in the shielding member 2
serves functions of absorbing and cushioning the squeezing force,
thereby increasing the capability of resisting the squeezing force
in the lateral collision and effectively safeguarding the
performance and soundness of the battery pack P and improving
safety performance of the vehicle.
[0083] Along a height direction (H) of the box M, a reinforcing
plate 12 is disposed at the bottom of the frame member 1, and is
configured to support the battery module L and serve a function of
reinforcement. In addition, the fixing member 3 is a structure
formed by extending the reinforcing plate 12 along the width
direction (Y) of the box M. When the vehicle is squeezed in a
lateral collision, the shielding member 2 is squeezed, and the
fixing member 3 is also squeezed. However, the fixing member 3
transmits the force onto the reinforcing plate 12 to relieve the
squeezing force imposed by the frame member 1 on the battery module
L, thereby improving the safety performance of the battery pack
P.
[0084] In a possible design, the box M includes a crossbeam 13 and
a vertical beam 14. The crossbeam 13 and the vertical beam 14
partition the frame member 1 into a plurality of accommodation
cavities 11. Each of the accommodation cavities 11 can accommodate
the battery module L. In addition, the crossbeam 13 and the
vertical beam 14 are fixedly connected to the battery module L
separately, so that the battery module L is fixed in the
accommodation cavity 11 of the box M to prevent the battery module
L from loosening.
[0085] FIG. 8 is a top view of a first shielding member 21 of a box
M according to an embodiment of this application; FIG. 9 is a
bottom view of a second shielding member 22 of a box M according to
an embodiment of this application; and FIG. 10 is a local detailed
view of a part of FIG. 9. As shown in FIG. 8 to FIG. 10, the
shielding member 2 according to this embodiment of this application
includes a first shielding member 21 and a second shielding member
22. The first shielding member 21 and the second shielding member
22 are connected to each other to form a hollow portion 23. Along
the height direction (H) of the box M, the first shielding member
21 and the second shielding member 22 are arranged from top
downward to form a hollow portion 23 configured to accommodate the
fixing member 3. The first shielding member 21 and the second
shielding member 22 are disposed separately, so as to achieve the
advantage of high strength in comparison with the integrally formed
shielding member 2. The first shielding member 21 and the second
shielding member 22 are disposed independently, and a joint between
the first shielding member 21 and the second shielding member 22
can withstand a relatively high extrusion force, thereby
significantly improving the capability of the shielding member 2 to
resist the squeezing force in a lateral collision.
[0086] The first shielding member 21 includes a first connecting
piece 213, and the second shielding member 22 includes a second
connecting piece 224. The first connecting piece 213 is connected
to the second connecting piece 224 to form the shielding member 2.
The two connecting pieces can improve the capability of the
shielding member 2 to withstand a squeezing force. In addition, the
first connecting piece 213 and the second connecting piece 224 are
fixedly connected to the frame member 1 separately to fix the first
shielding member 21 and the second shielding member 22 onto the box
M respectively, thereby improving the structural strength.
[0087] In a possible design, the first shielding member 21 includes
a first bulge 211. The first bulge 211 is disposed to protrude away
from the second shielding member 22. The first bulge 211 and a
corresponding part of the second shielding member 22 form a hollow
portion 23. The first bulge 211 is disposed to protrude away from
the second shielding member 22 to facilitate formation of the
hollow portion 23 configured to accommodate the fixing member 3. In
addition, the first bulge 211 can increase strength of the first
shielding member 21, thereby increasing the strength of the entire
shielding member 2, improving the capability of resisting a
squeezing force in a lateral collision, and effectively
safeguarding the performance and soundness of the battery pack
P.
[0088] Specifically, the second shielding member 22 includes a
second bulge 222. The second bulge 222 is disposed to protrude
toward the first shielding member 21. The second bulge 222 can
increase the strength of the second shielding member 22, thereby
increasing the strength of the entire shielding member 2. In
addition, the second bulge 222 is disposed to protrude toward the
first shielding member 21, thereby downsizing the entire shielding
member 2 and downsizing the entire battery pack P.
[0089] Further, the second bulge 222 fits snugly with the first
shielding member 21, thereby increasing the strength of the
close-fitting position. After being squeezed in a lateral
collision, the shielding member 2 at the close-fitting position is
not likely to deform, thereby improving the capability of resisting
a squeezing force in a lateral collision and safeguarding the
safety performance of the battery pack P.
[0090] As shown in FIG. 10, the second bulge 222 includes a main
body 222a and an extension portion 222b. The main body 222a and the
extension portion 222b are connected in communication with each
other. The main body 222a extends along the length direction (X) of
the box M. The extension portion 222b extends along the width
direction (Y) of the box M. The extension portion 222b can enhance
effects of the shielding member 2 in absorbing and cushioning a
squeezing force, thereby improving the capability of resisting the
squeezing force in a lateral collision.
[0091] As shown in FIG. 5, the second shielding member 22 further
includes a beam body 221. The beam body 221 is disposed
corresponding to the first bulge 211 to form a hollow portion 23
configured to accommodate the fixing member 3. The first shielding
member 21 further includes a fourth bulge 212. The fourth bulge 212
and the first bulge 211 are spaced apart. The fourth bulge 212 fits
snugly with the second bulge 222 to increase the strength of the
shielding member 2.
[0092] FIG. 6 is a schematic structural diagram of a frame member 1
of a box M according to an embodiment of this application, and FIG.
7 is a local detailed view of a part of FIG. 6. As shown in FIG. 6
and FIG. 7, the fixing member 3 includes a hitch portion 31
configured to fix the box M. The hitch portion 31 is accommodated
in the hollow portion 23. The hitch portion 31 is configured to
hitch the box M onto the vehicle. The hitch portion 31 is
accommodated in the hollow portion 23. When a squeezing force is
generated in a lateral collision, the hollow portion 23 can serve a
cushioning function and avoid direct collision with the hitch
portion 31, thereby improving the capability of the battery pack P
to resist the squeezing force in a lateral collision.
[0093] Specifically, the hitch portion 31 includes a third bulge
311. The third bulge 311 is disposed to protrude toward the first
shielding member 21. A gap exists between the third bulge 311 and
the first shielding member 21. The reserved gap is configured to
install a bushing. The third bulge 311 can increase the strength of
the hitch portion 31. A protrusion direction of the third bulge 311
is consistent with a protrusion direction of the first bulge 211,
thereby leaving more space for the shielding member 2.
[0094] Further, the top or bottom of the hitch portion 31 fits
snugly with the shielding member 2 to serve a function of
supporting the hollow portion 23. Alternatively, both the top and
bottom of the hitch portion 31 fit snugly with the shielding member
2. The hitch portion 31 is located in the hollow portion 23.
Therefore, the hitch portion 31 and the shielding member 2 fit
snugly together to serve a function of supporting the hollow
portion 23, and increase the strength of the shielding member
2.
[0095] The hitch portion 31 is designed as a bent structure to
further increase the strength of the hitch portion 31.
[0096] As shown in FIG. 7 to FIG. 9, a first through hole 211a is
disposed in the first bulge 211, a second through hole 223 is
disposed in the second shielding member 22, and a third through
hole 312 is disposed in the third bulge 311. The first through hole
211a, the second through hole 223, and the third through hole 312
are disposed correspondingly and configured to allow passing of a
bolt and hitch the battery pack P onto the vehicle.
[0097] In some embodiments, as can be seen from FIG. 4 to FIG. 6,
the fixing member 3 is connected onto a periphery of the frame
member 1.
[0098] The fixing member 3 is connected onto the periphery of the
frame member 1. The shielding member 2 is configured to be
connected to the frame member 1. The hollow portion contained in
the shielding member 2 accommodates at least a part of the fixing
member 3. In this way, both the fixing member 3 and the shielding
member 2 are connected to the periphery of the frame member 1.
Therefore, even if a vehicle is squeezed in a lateral collision,
the shielding member 2 is squeezed first, and the shielding member
2 withstands a squeezing force. In addition, the hollow portion 23
disposed in the shielding member 2 serves functions of absorbing
and cushioning the squeezing force in the lateral collision,
thereby increasing the capability of resisting the squeezing force
in the lateral collision and effectively safeguarding the
performance and soundness of the battery pack P.
[0099] Although this application has been described with reference
to exemplary embodiments, various improvements may be made to the
embodiments without departing from the scope of this application,
and the components therein may be replaced with equivalents.
Particularly, to the extent that no structural conflict exists,
various technical features mentioned in various embodiments can be
combined in any manner. This application is not limited to the
specific embodiments disclosed herein, but includes all technical
solutions falling within the scope of the claims.
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